Tunable Silver-Containing Stationary Phases for Multidimensional Gas Chromatography

Autor(es)

Souza, Israel D. ^[1] ; Nan, He ^[2] ; Queiroz, Maria Eugenia C. ^[1] ; Anderson, Jared L. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Fac Filosofia Ciencias & Letras Ribeirao Preto, Dept Quim, BR-14040901 Sao Paulo - Brazil

^[2] Iowa State Univ, Dept Chem, Ames, IA 50011 - USA

• Tipo de documento: Artigo Científico
• Fonte: Analytical Chemistry; v. 91, n. 8, p. 4969-4974, APR 16 2019.
• Citações Web of Science: 1

Resumo

To achieve high separation power of complex samples using multidimensional gas chromatography (MDGC), the selectivity of the employed stationary phases is crucial. The nonpolar x polar column combination remains the most popular column set used in MDGC. However, resolution of mixtures containing light analytes possessing very similar properties remains a formidable challenge. The development of stationary phases that offer unique separation mechanisms have the potential to significantly improve MDGC separations, particularly in resolving coeluting peaks in complex samples. For the first time, a stationary phase containing silver(I) ions was successfully designed and employed as a second-dimension column using comprehensive two-dimensional gas chromatography (GC X GC) for the separation of mixtures containing alkynes, dienes, terpenes, esters, aldehydes, and ketones. Compared with a widely used nonpolar and polar column set, the silver-based column exhibited superior performance by providing better chromatographic resolution of coeluting compounds. A mixture of unsaturated fatty acids was successfully separated using a GC x GC method in which the elution order in the second dimension was highly dependent on the number of double bonds within the analytes. (AU)

• Processo FAPESP: 16/01082-9 - Cromatografia líquida acoplada à espectrometria de massas em tandem no modo column switching para análises de endocanabinóides em amostras plasma
• Beneficiário: Israel Donizeti de Souza
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 17/24721-0 - Líquidos iônicos a base de íons prata para a extração de olefinas por cromatografia gasosa bidimensional comprehensive
• Beneficiário: Israel Donizeti de Souza
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado